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| Number | Title | Issue Date |
| 7680057 | Data transmission method, data transmission system, transmitter and receiver A data transmission method etc. is provided. At a transmitting side, if a frame contains transmission data, frame data containing the transmission data and a calculated error-detecting code is generated. If the frame contains no transmission data, frame data contain... | 03/16/2010 |
| 7668107 | Hardware implementation of network testing and performance monitoring in a network device An embodiment of the present invention offloads the generation and monitoring of test packets from a Central processing Unit (CPU) to a dedicated network integrated circuit, such as a router, bridge or switch chip associated with the CPU. The CPU may download test r... | 02/23/2010 |
| 7664042 | Storage control apparatus, storage apparatus, storage control method, and computer-readable recording medium for executing a command based on data in received packet Information about an attribute of packets that are receivable corresponding to a command is registered. When a packet is received, information about an attribute of the packet received is acquired. Upon occurrence of a reception error that there is no information in... | 02/16/2010 |
| 7664043 | Method and apparatus for performing reachability testing within the context of customer virtual private networks In one embodiment, the invention comprises a method and apparatus for verifying connectivity in a network comprising a plurality of provider edge routers and a plurality of customer edge routers facilitating communication within at least one customer virtual private... | 02/16/2010 |
| 7664045 | Sampling to a next hop Samples from an addressed data forwarding devices, such as a router, are forwarded to a specified next hop address and/or out a specified next hop interface. However, the sampling and/or next hop forwarding is suppressed if the specified next hop address is unstable... | 02/16/2010 |
| 7664044 | Method of failure detection in an IP forwarding plane A method of failure detection on an Internet Protocol (IP) forwarding plane, which includes: IP nodes of the two ends obtain Bidirectional Forwarding Detection (BFD) identifier information which is used in the BFD, moreover start a BFD session, encapsulate and trans... | 02/16/2010 |
| 7656810 | System and method for monitoring and reacting to peer-to-peer network metrics The overall health of a peer-to-peer network may be inferred from statistics gathered and analyzed pertaining to individual node and node-to-node performance within the peer-to-peer network. When used with simulations for development or testing, the health statistic... | 02/02/2010 |
| 7646721 | Locating hardware faults in a data communications network of a parallel computer Hardware faults location in a data communications network of a parallel computer. Such a parallel computer includes a plurality of compute nodes and a data communications network that couples the compute nodes for data communications and organizes the compute node a... | 01/12/2010 |
| 7636318 | Real-time network analyzer A real-time network-analysis system comprises a network appliance and a plurality of management devices. The network appliance continuously monitors an object network and synthesizes a current network image comprising contemporaneous indicators of connectivity, occu... | 12/22/2009 |
| 7623464 | Rapid protocol failure detection A method is disclosed for rapidly detecting a protocol failure. In one embodiment, the method includes receiving an indication that a first process has failed. The first process having been engaged in communications over one or more network connections with a second... | 11/24/2009 |
| 7623465 | Network monitoring program, network system and network monitoring method A network system capable of easily, if a communication abnormality occurs at an application level, troubleshooting a cause of the abnormality, includes a plurality of monitoring target computers, a network monitoring device and a plurality of network devices for rel... | 11/24/2009 |
| 7619979 | Fault isolation in a network A system to isolate a fault to a particular port from among multiple ports in a network. The network typically has a plurality of devices including hosts, storage units, and switch groups that intercommunicate via transceivers. A fault indication is received from on... | 11/17/2009 |
| 7619980 | System operable to transmit and receive messages A system, minimising transmission delays and avoiding loss of synchronisation, using a contention based multiple access protocol comprises n transceivers each comprising a detector for detecting the condition of the medium and connected to a controller for switching... | 11/17/2009 |
| 7616580 | Adaptive clock method and system A device and method are disclosed for correctly restoring a read clock when there are a plurality of STM data stream transmission sources. In a CES device of an ATM communication system, ATM cells from respective connections, which are to be delivered to the same ou... | 11/10/2009 |
| 7613123 | Apparatus and method for establishing network Embodiments of a method and apparatus can establish a network using pre-set IP information when a host is coupled to a network. In an embodiment of a network establishment method, ARP response information can be compared with pre-stored set information using a prede... | 11/03/2009 |
| 7609642 | Detecting network interfaces capable of channel bonding A method discovers whether network interfaces associated with a device are capable of being channel bonded. In particular, each network interface associated with a device broadcasts a message on a network that other network interfaces can identify as having originat... | 10/27/2009 |
| 7599301 | Communications network tap with heartbeat monitor A communications network tap, comprises a first terminal and a second terminal adapted to couple the tap in-line in the network and communicate data packets with network devices. A heartbeat generator is configured to generate a heartbeat signal, and a heartbeat ins... | 10/06/2009 |
| 7596094 | System and method for transmission of operations, administration, and maintenance packets between ATM and switching networks upon failures A system and method of notifying a first communication network of a fault related to a second communication network is provided. The first communication network is connected to the second communication network. The first communication network has a first OAM protoco... | 09/29/2009 |
| 7577099 | Method and apparatus for fault localization in a network A method and apparatus for automatically localizing failures in a network. Failures can be localized by receiving an observation, querying a database for a plurality of models of risks and calculating a hypothesis from the plurality of models of risks that explains ... | 08/18/2009 |
| 7577098 | Device and method for network monitoring A network monitoring device that monitors a network state, includes a receiving unit that receives a packet passing through the network; a processing unit that performs analysis of the network state with respect to the packet received; and a determining unit that de... | 08/18/2009 |
| 7573827 | Method and apparatus for detecting network congestion A method of detecting congestion in a communications network and a network switch are described. The method comprises identifying an output link of a network switch as a congested link on the basis of a packet in a queue of the network switch which is destined for t... | 08/11/2009 |
| 7558212 | System and method for fault identification A novel method and system for fault identification is provided. A test head that is operable to generate a test signal along a pathway is employed. The test head is based on time domain reflectometry, and is thus operable to provide an estimated physical distance of... | 07/07/2009 |
| 7554924 | Method for detecting duplicate global port identifiers The present invention provides methods of checking for duplicate port globally unique identifiers during a discovery of a subnet of a system using a channel adapter. These methods allow a Subnet Manager, an Infiniband entity for managing the Infiniband topology, to ... | 06/30/2009 |
| 7554925 | Method and system for creating a quality of service message A test program creates a variety of types of quality of service messages to allow a user to test the response of one or more network devices to the variety of messages. The test program displays a representation of a quality of service message on a user interface. T... | 06/30/2009 |
| 7554923 | Tandem connection activation/deactivation A method for the automatic activation and deactivation of a tandem connection (2-6) is provided responsive to receiving an activation or deactivation request. Prior to activation, received transmission signals are monitored (M) for an existing tandem c... | 06/30/2009 |
| 7545750 | Apparatus and method for detecting network failure The network failure detection apparatus is realized as a function of a terminal in a network. The network failure detection apparatus acquires packet reception statistic information on a port-by-port basis of a relay unit, and extracts a port having a large amount o... | 06/09/2009 |
| 7539147 | Apparatus and method for detecting and visualizing anomalies in network traffic Provided is an apparatus for detecting and visualizing anomalies in network traffic which includes a traffic information storing portion storing information on network traffic, a traffic state display portion presenting a status of the network traffic generated for ... | 05/26/2009 |
| 7525922 | Duplex mismatch testing A method for testing a communication network includes transmitting at least one unidirectional flow over a path through the network, and measuring arrival characteristics of the least one unidirectional flow at a receiving end of the path. The arrival characteristic... | 04/28/2009 |
| 7519001 | Information processing apparatus and method of controlling the information processing apparatus An information processing system comprises an information processing apparatus, a switch, and a storage device, wherein the first communication ports and the third communication ports are connected to the second communication ports. When a response from a storage de... | 04/14/2009 |
| 7519000 | Systems and methods for managing a network A system for managing and documenting a local area communications network is provided which deploys power sourcing equipment and powered devices by the use of active electronic modules, having an Ethernet controller and Power over Ethernet forwarding capabilities, a... | 04/14/2009 |
| 7508767 | Access management method and access management server In an access management method in a network including at least one end system, a packet communication unit for routing, and an access management server including an authentication function, a communication partner is authenticated for each session and a communicatio... | 03/24/2009 |
| 7502328 | Method of monitoring link performance and diagnosing active link state in Ethernet passive optical network Provided is a method of monitoring link performance and diagnosing an active link state without interrupting traffic in an Ethernet passive optical network (EPON) while the link is in the active state. The method of monitoring link performance and diagnosing an acti... | 03/10/2009 |
| 7499407 | System and method for managing an optical networking service Described are a system and method for managing a service across an optical network over a dedicated circuit between a first and second service termination points. Each service termination point generates a service performance report message. Each service performance... | 03/03/2009 |
| 7496044 | Method and apparatus for analyzing a media path for an internet protocol (IP) media session Time To Live (TTL) values are modified in media packets to intentionally cause rejection of the media packets at intermediate nodes in a media path. Rejection notices caused by the TTL modified media packets are then analyzed to isolate Quality of Service (QoS) prob... | 02/24/2009 |
| 7496045 | Broadcast of shared I/O fabric error messages in a multi-host environment to all affected root nodes A method, mechanism and computer usable medium is provided for distributing I/O fabric errors to the appropriate root nodes in a multi-root environment. The case where the I/O fabric is attached to more than one root node and where each root can potentially share wi... | 02/24/2009 |
| 7489642 | Silent datapath failure detection The apparatus and method herein provide a means for actively monitoring a communications node for datapath disruptions caused within the node. It was developed to address linecard failures that were detected in the field and for which traditional error detection mec... | 02/10/2009 |
| 7486625 | Communications network tap with link fault detector A communications network tap with a link fault detector, comprises a first terminal and a second terminal adapted to couple the tap in-line in the network and communicate data packets with network devices. A tap circuit is coupled to the first terminal and second te... | 02/03/2009 |
| 7486624 | Multiple and parallel access network tap for gigabit internet LANS A single-usage network tap monitors network information flow over a particular connection. Instead of requiring a tap for each analytical device, by incorporating elements that regenerate, spread, and coordinate the timing of the signal, multiple, simultaneous, and ... | 02/03/2009 |
| 7483382 | Device for securely monitoring data switching A multichannel digital switching unit including a connection interface between circuits that provides the physical links to a transmitting environment defining the ports and a processing unit that switches multi-field data frames between the different ports. A frame... | 01/27/2009 |
| 7480250 | Apparatus and method for establishing network An apparatus and a method for establishing a network by preset IP information when a host is plugged in a network, are provided. The apparatus and the method for establishing a network comprise one or more first hosts with a MAC address and an IP address as establis... | 01/20/2009 |